Final answer:
ACE inhibitors are often used in the initial treatment of hypertension to relax blood vessels and reduce blood pressure.
Step-by-step explanation:
The initial treatment for hypertension often involves the use of ACE inhibitors. These drugs work by blocking the production of angiotensin II, a hormone that causes blood vessels to constrict and raises blood pressure. By inhibiting angiotensin II, ACE inhibitors allow blood vessels to relax and widen, reducing blood pressure.